[Swan]

some ideas, pretty random, don't know if they are possible
-shockshield: big shield, decrese shock resistance, increase mr, cast "chargebody" on the wielder.[shield, forgeable]

-traintravel: teleport the caster and his army in the chosen province[spell, ritual]

-home-made gun: similar to the fiery bolas

-various kind of grenades: bonus weapon, 1-2 ammo, various effect(poison, fatigue damage, armor break)

-a flying castle(maybe a remote summon castle speel)

-a jetpack unit